How to use postman to create Asset tags with IP Address In Range(s) + Network(s)

I have several hundred subnets that i need to create tag for. they will be divided by several criteria mainly offices and subnet. I am able to use the subnets but i cannot use IP Address In Range(s) + Network(s) option using postman. I searched documents without any luck. can anyone help on the syntax of the IP Address In Range(s) + Network(s).